
        #contain{
            background-color: aliceblue;
            background-size: over;
        }
        .main{
            width: 100%;
            height: 700px;
            margin-top: 45px;
        }
        #contain{
            width: 100%;
            height: 700px;
        }
        ul{
            list-style-type: none;
            margin: 0 auto;
            padding: 0;
            overflow: hidden;
            background-color: black;
            position: fixed;
            left: 0;
            top: 0;
            width: 100%;
        }
        li{
            float: left;
        }
        li a{
            display: block;
            color: white;
            text-align: center;
            padding: 14px 16px;
            text-decoration: none;
        }
        li.blank{
            width: 80px;
        }
        li a:hover{
            background-color: rgb(145, 119, 26);   
            border-radius: 5px;
        }
